• Photonics Research
  • Vol. 11, Issue 10, 1791 (2023)
Tianyu Liu1, Peng Ran1, Yirong Su1, Zeng Chen2, Renchen Lai3, Weidong Shen1, Yaoguang Ma1, Haiming Zhu2, and Yang (Michael) Yang1、*
Author Affiliations
  • 1State Key Laboratory of Modern Optical Instrumentation, Institute for Advanced Photonics, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
  • 2State Key Laboratory of Modern Optical Instrumentation, Key Laboratory of Excited State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
  • 3Instrumentation and Service Center for Molecular Sciences, Westlake University, Hangzhou 310024, China
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    DOI: 10.1364/PRJ.498412 Cite this Article Set citation alerts
    Tianyu Liu, Peng Ran, Yirong Su, Zeng Chen, Renchen Lai, Weidong Shen, Yaoguang Ma, Haiming Zhu, Yang (Michael) Yang. Solution-processed halide perovskite microcavity exciton-polariton light-emitting diodes working at room temperature[J]. Photonics Research, 2023, 11(10): 1791 Copy Citation Text show less

    Abstract

    Exciton-polaritons offer the potential to achieve electrically pumped perovskite polariton lasers with much lower current thresholds than conventional photonic lasers. While optically pumped exciton-polaritons have been widely studied in halide perovskites, electrically-pumped polaritons remain limited. In this study, we demonstrate the use of a solution-processing strategy to develop halide perovskite polariton light-emitting diodes (LEDs) that operate at room temperature. The strong coupling of excitons and cavity photons is confirmed through the dispersion relation from angle-resolved reflectivity, with a Rabi splitting energy of 64 meV. Our devices exhibit angle-resolved electroluminescence following the low polariton branch and achieve external quantum efficiencies of 1.7%, 3.85%, and 3.7% for detunings of 1.1, -77, and -128 meV, respectively. We also explore devices with higher efficiency of 5.37% and a narrower spectral bandwidth of 6.5 nm through the optimization of a top emitting electrode. Our work demonstrates, to our knowledge, the first room-temperature perovskite polariton LED with a typical vertical geometry and represents a significant step towards realizing electrically pumped perovskite polariton lasers.
    EUP,LP(θ)=Ex+Eph(θ)2±V2+(ExEph(θ))42,

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    |X|2=12(1+Eph(θ)Ex(Eph(θ)Ex)2+4V2),|C|2=12(1Eph(θ)Ex(Eph(θ)Ex)2+4V2),

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    neff=nDBRLDBR+nidiLDBR+di,(C1)

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    Tianyu Liu, Peng Ran, Yirong Su, Zeng Chen, Renchen Lai, Weidong Shen, Yaoguang Ma, Haiming Zhu, Yang (Michael) Yang. Solution-processed halide perovskite microcavity exciton-polariton light-emitting diodes working at room temperature[J]. Photonics Research, 2023, 11(10): 1791
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